i like chris christie a lot. i want him to run. i want him to lose weight. i worry about this man dying in office. >> i want to see you all moving, right? >> reporter: dr. mariano says michelle obama's antiobesity agenda is a great campaign. >> we have the ideas and we have the desire to start solving america's childhood obesity problem. >> reporter: but the nation is already getting a preview of a corp pew lant commander in chief this spring when the washington national's unveils its president. william taft. he was so huge he once got stuck in the presidential bathtub. >> christi threw his weight around. >> reporter: as for christie whose size became an issue in the last election, he indicated he has a plan to lose those extra pounds. >> i'm making the best effort i can. sometimes i'm successful and other times i'm not. >> christie is still being koichicoy about whether he would run. that may depend on whether he weighs more or less in the coming years. wolf, you should note that chris christie said at this news conference a little while ago that his own do